Workman s time calculator



WORKMANS TIME CALCULATOR Filed May 5, 1921 I 464 6H0: new

PATENT OFFICE.

MILLARD A. LUCAS, OF KNOXVILLE, TENNESSEE.

WORKMANS TIME CALCULATOR.

Application filed Kay 3, 1921.

To all whom it may concern:

Be it known that I, MILLARD A. Lucas, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented new and useful Improvements in Workmens Time Calculators, of which the following is a specification.

This invention relates to calculators, and the prime object is to provide an improved device particularly adapted for use in mechanically calculatin and indicating the exact amount of time TJGtWBQIl any two given times, as for instance, between the time of going to work and the time of stopping work, whereb the device is particularly adapted for te use of timekeepers in factories and other places having a great many employees. The device is arranged to indicate not merely the lapsed time but the actual time of work where time is taken out for lunch, dinner, or other urposes, thereby avoiding the laborious worli of counting up the hours and fractions thereof, as is commonly done in factories and the like.

lVith these and other objects in view, the present invention consists in the combination and arrangement of parts as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claim, it of course being understood that changes in the form, proportion, size and minor details may be made, within the scope of the claim, without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:

Figure 1 is a plan view of a time calculator embodying the features of the present invention.

Figure 2 is a cross-sectional view thereof.

The present embodiment of the invention includes a base-or body A which may be of any shape, but is preferably circular and provided with a circular time scale divided into hours and fractions thereof, with the hour graduations numbered from 1 to 12, as in an ordinary clock dial. This body is provided with a concentric circular depression in which is rotatably mounted a disk B provided with an outer circular time scale C and an inner circular time scale D, the hour designations of the inner scale being placed midway between the hour designations of the outer scale. The hour des- Serial No. 466,379.

ignation 12 of the inner scale is located midway between the hour designations 12 and 1 of the outer scale. The disk may be ro tatably mounted in any suitable manner, the mounting shown in the drawing being that of a pivot E rising from the base A and having the disk B rotatable thereon. A movable index F is mounted to travel in a circular path around the several scales, and n the present embodiment of the invention is shown as a radial arm mounted upon the pivot E and extending across the several scales. A stationary pointer or index Gr is provided upon the rotatable disk, is located on the hour designation 12, and overlaps and cooperates with the time scale on the body A.

The device is used in the following manner. Assuming that a workman goes to work at 7 oclock, the rotatable scale member is moved to bring its index or pointer G into alignment with the hour designation 7 on the stationary scale. Further assuming that the workman stopped work at 2 oclock, the radial arm or index F is swung around to the hour designation 2 on the stationary scale. It will now be noted that the movable index F is in alignment with the hour designation 7 of the outer scale of the rotatable member B, which indicates that seven hours have ela sed from 7 oclock to 2 oclock, which is t e exact time between said hours. Assumin that the workman took out a predetermined amount of time, (in the present instance half an hour for lunch, dinner or the like), by reference to the inner scale on the rotatable member B it will be noted that the movable index F is half way between the hour designations 6 and 7, thereby indicating that the exact amount of time the workmen worked was six and a half hours.

From the foregoing description it will be understood that all that the timekeeper has to do is to set the index Gr at the hour the workman went to work and subsequently move the movable index to the hour indication on the outer stationary scale, at which the workman stopped work, and then the total time as well as the time of actual work will be plainly indicated on the scales without any mental effort or mental calculation whatsoever.

Of course it will be understood that any number of time divisions may be employed between the hour designations, and that the inner scale on the movable member B may be arranged, with respect to the outer scale thereon according to the amount of time 10 and provided With tWo concentric time scales, the hour designations of the inner scale lying between the hour designations of the outer scale of the movable member, a pointer carried b the movable member and in cooperative relation With the scale of the body, and a movable index extending radially across the several scales and movable in a circular path around said scales.

MILLARD A. LUCAS. 

